Abstract: A secondary battery comprises an electrolyte solution and a positive electrode plate, wherein the positive electrode plate comprises a layered material with a molecular formula of LiaNibCocM1aM2eOfAg, wherein 0.8?a?1.2, 0<b<0.98, 0?c<0.1, 0<d<0.5, 0?e?0.5, 0?f?2, 0?g?2, b+c+d+e=1, and f+g=2; and the electrolyte solution comprises lithium tetrafluoroborate, and the mass percentage content of lithium tetrafluoroborate in the electrolyte solution is x %, based on the total mass of the electrolyte solution, and the secondary battery satisfies: x>0 and 0.05?c+x/10?0.15.

Abstract: A data processing device and related products are provided. The data processing device includes: a decoding unit, a discrete address determining unit, a continuous data caching unit, a data read/write unit, and a storage unit. Through the data processing device, the processing instruction may be decoded and executed, and the discrete data may be transferred to a continuous data address, or the continuous data may be stored to a plurality of discrete data addresses. As such, a vector computation of the discrete data and vector data restoration after the vector computation may be implemented, which may simplify a processing process, thereby reducing data overheads. In addition, according to the embodiments of the disclosure, when the discrete data is read, by caching a storage address corresponding to a read request, a read request of each piece of data may be merged to read one or more pieces of discrete data, thereby improving reading efficiency of the data.

Abstract: A one-part composition includes by wt % of total weight of the composition: a) 5 to 70 wt % of at least one emulsified polymeric binder, the binder comprising one or more of (meth)acrylamide or derivatives thereof as a polymerized monomer; b) 1 to 55 wt % of at least one silicate; c) 0.01 to 10 wt % of at least one alkyl siliconate; d) water, and e) optional additives. The binder a) includes (meth)acrylamide or derivative thereof as a polymerized monomer and is in the form of emulsified polymeric particles having a volume average particle size of 50 nm-500 nm.

Abstract: Provided are an ionizable lipid compound with an adjacent cis-double bond structure, a preparation method therefor, and the use thereof in the delivery of an active therapeutic agent (e.g., a nucleic acid). The ionizable lipid compound can provide a higher encapsulation rate of active substances and a better cell or in vivo transfection rate, and is particularly suitable for preparing nanoparticles with a solid structure.

Abstract: A circuit board structure, an information processing method and apparatus, and a communication device. The circuit board structure includes a circuit board substrate, a temperature drift processing chip, and at least two heat-sensitive elements; the circuit board substrate including a first substrate and a second substrate opposite the first substrate. The first substrate is provided with a heat-generating device; and the second substrate has a cavity, the cavity being provided with at least one boss extending toward the first substrate. The heat-generating device is located between the first substrate and the boss; the at least two heat-sensitive elements are disposed at a peripheral position of the heat-generating device; and the temperature drift processing chip is electrically connected to the at least two heat-sensitive elements, and the temperature drift processing chip is disposed on the circuit board substrate.

Abstract: The present disclosure relates to a spheroidizing-annealed steel for the ball screw having high strength and resistance to low temperatures, wherein the chemical composition of the steel in mass percentage is: C: 0.40-0.70%, Si: 1.20-1.80%, Mn: 1.00-1.60%, Cr: 0.80-1.20%, S: ?0.025%, P?0.025%, Ni: 0.10-0.60%, Cu: 0.30-0.80%, Mo: 0.10-0.40%, Al?0.05%, Ca?0.0010%, Ti?0.003%, O?0.0010%, As?0.04%, Sn?0.03%, Sb?0.005%, Pb?0.002%, the balance is Fe and unavoidable impurities. In microstructure of the steel, cementite exists in a spheroidized state with a diameter of 0.1-0.5 ?m, preferably 0.3-0.5 ?m, a spheroidizing rate is 95% or more, and the rest is ferrite.

Abstract: Embodiments of the present disclosure provide a headphone including a sound production component and an ear hook. The ear hook includes a first portion and a second portion connected in sequence. The first portion being hooked up between an ear auricle and a head of a user, and the second portion is configured to be hang between an auricle of a user and a head of the user, the second portion extends toward a front outer side of the auricle, connects with the sound production component, and is configured to place the sound production component at a position close to an ear canal without blocking an opening of the ear canal, and at least a portion of the sound production component is inserted into an concha cavity. The sound production component and the first portion of the ear hook clamp the auricle in a wearing state.

Abstract: Embodiments of the present disclosure provide an earphone, comprising a sound production component including a transducer and a housing. The earphone further includes and an ear-hook, wherein the ear-hook places the sound production component at a position near an ear canal but not blocking the ear canal. The sound production component and the ear-hook have a first projection and a second projection, respectively, on a sagittal plane. A first distance exists between a centroid of the first projection and a highest point of the second projection along a vertical axis direction, and a ratio of the first distance to a height of the second projection along the vertical axis direction is in a range of 0.35 to 0.6. A sound outlet is provided on an inner side surface of the housing, other side surfaces of the housing are provided with one or more pressure relief holes.

Abstract: Semiconductor fabrication methods and semiconductor devices are disclosed. According to some aspects, a memory device includes a memory stack having interleaved a plurality of conductive layers and a plurality of insulating layers on a substrate, and a channel structure extending vertically in the memory stack. The channel structure includes a semiconductor channel extending vertically in the memory stack and conductively connected to a source structure. The semiconductor channel includes polysilicon, and a grain size of the polysilicon ranges from 100 nm to 600 nm.

Abstract: Embodiments of the present disclosure provide an earphone including: a sound generation component, including a transducer and a housing accommodating the transducer, the housing being provided with a sound outlet hole and a pressure relief hole, the sound outlet hole being provided on an inner side of the housing facing an auricle, and the pressure relief hole being provided on an other side of the housing; an ear hook configured to place the sound generation component near an ear canal without blocking the ear canal in a wearing state; and a microphone assembly at least including a first microphone and a second microphone provided in the sound generation component or the ear hook, the sound generation component or the ear hook being provided with a first sound receiving hole and a second sound receiving hole corresponding to the first microphone and the second microphone, respectively.

Abstract: The present disclosure relates to an earphone, comprising: a sound production component, at least a portion of the sound production component extending into a concha cavity; ear hook disposed between an auricle and a head of the user, extending toward a side of the auricle away from the head, and connecting the sound production component; in a non-wearing state, the ear hook and the sound production component form a first projection on a first plane comprising an outer contour, a first end contour, an inner contour, and a second end contour, the inner contour, the first end contour, the second end contour, and a tangent segment connecting the first end contour and the second end contour define a third closed curve, a ratio of a projection area of the sound production component on the first plane to a third area of the third closed curve is between 0.67 and 1.06.

Abstract: TA preparation method for off-the-shelf human umbilical cord-derived mesenchymal stem cells includes culturing an isolated umbilical cord tissue blocks to obtain P0 cells; carrying out passage on the P0 cells twice to obtain P2 cells, and cryopreserving the P2 cells; the cryopreserved P2 cells are subjected to thawing and passage twice to obtain P4 cells, and the P4 cells are cryopreserved; the cryopreserved P4 cells are subjected to thawing and passage once to obtain P5 cells, and the P5 cells are sequentially digested, washed and resuspended to obtain the human umbilical cord-derived mesenchymal stem cells. The present invention also adopts cryopreservation method to develop a cryopreservation preparation of human umbilical cord-derived mesenchymal stem cells. The cryopreservation preparation is convenient for storage and can be directly administered intravenously after thawing without changing the liquid, avoiding possible contamination risk during dispensing, and is more conducive to clinical use.

Abstract: The present disclosure provides an earphone comprising a sound production component and an ear hook. In a wearing state, the ear hook is configured to place the sound production component at a position near an ear canal but not blocking the ear canal. An inner contour of the ear hook's projection on a user's sagittal plane includes a first curve having an extremum point in a first direction. The first direction is perpendicular to a long-axis direction of a projection of the sound production component on the sagittal plane. The extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane, and the upper vertex is a highest point of an inner contour of the ear hook along the user's vertical axis. An inclination angle of the long-axis direction relative to a horizontal direction is within a range of 13°-21°.

Abstract: The present invention relates to a heterocyclic modified platinum complex containing an ONCN tetradentate ligand, which has a structure as shown in Chemical Formula (I). The complex is used in organic light-emitting diodes, has a relatively low driving voltage and relatively high luminous efficiency, can significantly prolong the service life of a device, and has the potential for application in the field of organic electroluminescent devices. The present invention further provides an organic electroluminescent device including a cathode, an anode and an organic layer, the organic layer includes one or more layers of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer, and at least one layer in the organic layer contains the compound as shown in Structural Formula (I).

Abstract: Provided is a processing chamber configured to contain a semiconductor substrate in a processing region of the chamber. The processing chamber includes a remote plasma unit and a direct plasma unit, wherein one of the remote plasma unit or the direct plasma unit generates a remote plasma and the other of the remote plasma unit or the direct plasma unit generates a direct plasma. The combination of a remote plasma unit and a direct plasma unit is used to remove, etch, clean, or treat residue on a substrate from previous processing and/or from native oxide formation. The combination of a remote plasma unit and direct plasma unit is used to deposit thin films on a substrate.

Abstract: The present invention discloses a clustering routing optimization method based on adaptive evolutionary algorithm for a wireless sensor network, comprising following steps: performing population initialization by initial position and energy information of sensor nodes; calculating fitness values, and implementing iterative operation of elite preservation, adaptive crossover and mutation; after the iteration, selecting a cluster head; routing data packet of the cluster head to a base station. Convergence process of the evolutionary algorithm is improved by nonlinearly adjusting the probability of crossover and mutation; upper and lower bound of crossover and mutation operators are dynamically adjusted by fitness value; adding an incentive factor, adjusting the crossover and mutation probability when the fitness value tends to converge, and running the algorithm again to confirm that a new optimal value is generated.

Abstract: A magnetic resonance (MR) imaging method of correcting nonuniformity in diffusion-weighted (DW) MR images of a subject is provided. The method includes applying a DW pulse sequence along a plurality of diffusion directions with one or more numbers of excitations (NEX), and acquiring a plurality of DW MR images of the subject along the plurality of diffusion directions with the one or more NEX. The method also includes deriving a reference image and a base image based on the plurality of DW MR images, generating a nonuniformity factor image based on the reference image and the base image, and combining the plurality of DW MR images into a combined image. The method also includes correcting nonuniformity of the combined image using the nonuniformity factor image, and outputting the corrected image.

Abstract: A method, a system and an intelligent terminal for one-bit quantization DoA estimation, which include: when a quantity of far-field and uncorrelated spatial narrow-band source signals are incident from different directions to a uniform linear array receiver, receiving the narrow-band source signals by a quantity of antenna array elements, and the vector and matrix are used to model the received signals by one-bit quantization to obtain a joint probability mass model of one-bit quantization DoA estimation; deriving the joint probability mass model of one-bit quantization DoA estimation, and constructing an l2,1 norm optimization model based on the maximum likelihood principle; solving the steepest descent direction of the optimization model by steepest descent method to obtain the one-bit quantization DoA and the source number.

Abstract: An automatic charging vehicle, a method for operating the automatic charging vehicle, and an automatic charging system. The automatic charging vehicle includes: an automatic traveling module, which is configured to move, according to a route between the automatic charging vehicle and a device to be charged, to the device to be charged; a power module, which is configured to store and provide electric energy; and an automatic docking and separating device, which is configured to execute docking and separating between a first connector and a second connector capable of being in electrical contact with the first connector, the first connector and the second connector being used for transmitting electric energy.

Abstract: A method and an apparatus for controlling an Android app, and a terminal device are provided, and relate to the field of computer control technologies. According to the method, the Windows terminal device may create shortcuts for an Android app in common control areas, that is, in a start menu and settings and on a control panel and a desktop, by using an Android simulator platform. In this way, it is convenient for a user to perform an operation, for example, a viewing, starting, uninstallation, or changing operation, on the Android app at a corresponding shortcut location of the Windows terminal device.